A.
Query on Graph In this problem, you will be given a directed graph and there will be few queries in the format "u v... |
B.
Happy Shopping Mr. and Mrs. Smith are a very happy couple. But Mrs. Smith likes online shopping very much and it gi...
Moderate
51/81/219 |
C.
Ghosh vs Datta About two hundred years ago, a serious dispute evoked between the two neighboring colonies of Khulna... |
D.
Flower Garden Trisha and her little sister Rafa loves gardening. They plant trees and water them everyday. When th... |
E.
Bad Neighbors In the strange neighborhood of Nocu, a lot of people lives pretty happily, or so they think. Like mo... |
F.
Sofdor Ali and Histogram The Great Sofdor Ali is now interested in competitive programming. Seeing this, his friend and also ... |